help! don't understand rushing!

Okay chill.
It's not even November, you don't register for recruitment for at least 7-8 more months.
Also, I suggest getting off this site and forming your own opinions. It's toxic. Lucky for me I found it after I got a bid and joined a chapter.
But now to answer your question:
There are three rounds and preferentials.
Round 1: This year it was split over two days. You visited half the houses (8) on day one, and the other half on day two. You travel with your pi chi group which is assigned at orientation and in alphabetical order. Your pi chi (Panhellenic counselor) will lead you to each house. At the end of day two, you go and preference your houses. Basically, you write down 11 houses that you would like to go back to, and then rank the last five houses in order of how much you like them (1- would go back to, 5- never go back again). Then the computer does it's thing and you get a schedule the next morning of the houses that have invited you back. If all of your top 11 houses invited you back, that is where you go. That is usually not likely, so most people go back to houses that were on their list of 5 and some do not have a full schedule.
Round 2: This was also split over two days. You get a schedule of parties for the first day of Round 2 and you get yourself to the houses based on the times. You wait outside the house and pi chi's will organize you how the chapter requests them to. Then you come back on day 2 and get the list of remaining houses that invited -cont-